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Xue J, Luo Z, Huang J, Deng Y, Dong S, Liu S. Enantioselective Construction of C3-Multifunctionalization α-Hydroxy-β-amino Pyridines via α-Pyridyl Diazoacetate, Water, and Imines for Drug Hunting. Org Lett 2022; 24:9502-9507. [PMID: 36537781 DOI: 10.1021/acs.orglett.2c03987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An asymmetric catalytic approach for the construction of C3-multifunctionalization α-hydroxy-β-amino pyridines has been reported. The products can be accessed by the modulation of two chiral catalysts independently in high yield and with good enantioselectivity. The method features mild reaction conditions and an excellent functional group tolerance. Biological activity analysis shows that the resulting products have a selective antiosteosarcoma activity on 143B cells.
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Affiliation(s)
- Jian Xue
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, China
| | - Zhengli Luo
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, China
| | - Jisheng Huang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, China
| | - Yaqi Deng
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, China
| | - Suzhen Dong
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, China
| | - Shunying Liu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai 200062, China
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2
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Wang JF, Meng X, Zhang CH, Yu CM, Mao B. Organocatalytic Enantioselective Conjugate Alkynylation of β-Aminoenones: Access to Chiral β-Alkynyl-β-Amino Carbonyl Derivatives. Org Lett 2020; 22:7427-7432. [PMID: 32966092 DOI: 10.1021/acs.orglett.0c02394] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Readily available potassium alkynyltrifluoroborates were used for organocatalytic asymmetric conjugate alkynylation of β-enaminones. The interception of a modified binaphthol catalyst and in situ generated organodifluoroboranes proved important to access functionalized β-alkynyl-β-amino carbonyls and derivatives with improved chemo-reactivity and enantio-induction. Mechanistic studies revealed the impact of molecular sieves on efficiency and stereocontrol. The products undergo additional functionalization to yield a diverse set of valuable β-alkynyl-β-amino carbonyl scaffolds.
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Affiliation(s)
- Jian-Fei Wang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Xin Meng
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Chao-Huan Zhang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Chuan-Ming Yu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Bin Mao
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
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3
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Novel compounds of hybrid structure pyridazinone–coumarin as potent inhibitors of platelet aggregation. Future Med Chem 2019; 11:2051-2062. [DOI: 10.4155/fmc-2018-0373] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Aim: The current limitations of antiplatelet therapy promote the search for new antithrombotic agents. Here we describe novel platelet aggregation inhibitors that combine pyridazinone and coumarin scaffolds in their structure. Results: The target compounds were synthesized in good yield from maleic anhydride, following a multistep strategy. The in vitro studies demonstrated significant antiplatelet activity in many of these compounds, with IC50 values in the low micromolar range, revealing that the activity was affected by the substitution pattern of the two selected cores. Additional studies point out their effect as inhibitors of glycoprotein (Gp) IIb/IIIa activation. Conclusion: This novel hybrid structure can be considered a good prototype for the development of potent platelet aggregation inhibitors.
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Fernández-Sánchez L, Fernández-Salas JA, Maestro MC, García Ruano JL. Reformatsky Reaction to Alkynyl N-tert-Butanesulfinyl Imines: Lewis Acid Controlled Stereodivergent Synthesis of β-Alkynyl-β-Amino Acids. J Org Chem 2018; 83:12903-12910. [DOI: 10.1021/acs.joc.8b01918] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Luis Fernández-Sánchez
- Departamento de Química Orgánica (módulo-1), Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain
| | - José A. Fernández-Salas
- Departamento de Química Orgánica (módulo-1), Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain
| | - M. Carmen Maestro
- Departamento de Química Orgánica (módulo-1), Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain
| | - Jose L. García Ruano
- Departamento de Química Orgánica (módulo-1), Universidad Autónoma de Madrid, Cantoblanco, 28049-Madrid, Spain
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Stephens AW, Koglin N, Dinkelborg LM. Commentary to 18F-GP1, a Novel PET Tracer Designed for High-Sensitivity, Low-Background Detection of Thrombi: Imaging Activated Platelets in Clots-Are We Getting There? Mol Imaging 2018; 17:1536012117749052. [PMID: 29350098 PMCID: PMC5777563 DOI: 10.1177/1536012117749052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Thrombus formation can lead to heart attacks, stroke and pulmonary embolism, which are major causes of mortality. Current standard diagnostic imaging methods detect anatomic abnormalities such as vascular flow impairment but have limitations. By using a targeted molecular imaging approach critical components of a pathology can be selectively visualized and exploited for an improved diagnosis and patient management. The GPIIb/IIIa receptor is abundantly and specifically exposed on activated platelets and is the key receptor in thrombus formation. This commentary describes the current status of GPIIb/IIIa-based PET imaging approaches with a focus on the recently published preclinical data of the small-molecule PET tracer 18F-GP1. Areas of future research and potential clinical applications are discussed that may lead to an improved detection of critical thromboembolic events and an optimization of available antithrombotic therapies by tracking activated platelets.
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Pérez-Venegas M, Reyes-Rangel G, Neri A, Escalante J, Juaristi E. Mechanochemical enzymatic resolution of N-benzylated-β 3-amino esters. Beilstein J Org Chem 2017; 13:1728-1734. [PMID: 28904616 PMCID: PMC5564257 DOI: 10.3762/bjoc.13.167] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 08/01/2017] [Indexed: 11/26/2022] Open
Abstract
The use of mechanochemistry to carry out enantioselective reactions has been explored in the last ten years with excellent results. Several chiral organocatalysts and even enzymes have proved to be resistant to milling conditions, which allows for rather efficient enantioselective transformations under ball-milling conditions. The present article reports the first example of a liquid-assisted grinding (LAG) mechanochemical enzymatic resolution of racemic β3-amino esters employing Candida antarctica lipase B (CALB) to afford highly valuable enantioenriched N-benzylated-β3-amino acids in good yields. Furthermore the present protocol is readily scalable.
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Affiliation(s)
- Mario Pérez-Venegas
- Departamento de Química, Centro de Investigación y de Estudios Avanzados, Avenida I.P.N. 2508, Ciudad de México, 07360, Mexico
| | - Gloria Reyes-Rangel
- Departamento de Química, Centro de Investigación y de Estudios Avanzados, Avenida I.P.N. 2508, Ciudad de México, 07360, Mexico
| | - Adrián Neri
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Cuernavaca, Morelos, 62210, Mexico
| | - Jaime Escalante
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Cuernavaca, Morelos, 62210, Mexico
| | - Eusebio Juaristi
- Departamento de Química, Centro de Investigación y de Estudios Avanzados, Avenida I.P.N. 2508, Ciudad de México, 07360, Mexico.,El Colegio Nacional, Luis Gonzáles Obregón 23, Centro Histórico, Ciudad de México, 06020, Mexico
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Abstract
Antiplatelet therapy displays a critical role in the treatment and prevention of antithrombotic disorders. Many new antiplatelet agents have been developed following the emergence of various clinical limitations of classical antiplatelet drugs. This review covers mainly the recent advances in the development of P2Y12 antagonists and GPIIb/IIIa antagonists. Meanwhile, it summarizes promising approaches to new platelet surface receptors such as prostanoid EP3 receptor, thromboxane A2 prostanoid receptor, protease-activated receptors, GPIb-IX-V receptor and P-selectin. In addition, PI3Kβ, a critical protein at the inside signaling pathway of platelet activation is also mentioned as an important antiplatelet target. Moreover, the development of respective drug candidates is discussed in detail.
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Lohrke J, Siebeneicher H, Berger M, Reinhardt M, Berndt M, Mueller A, Zerna M, Koglin N, Oden F, Bauser M, Friebe M, Dinkelborg LM, Huetter J, Stephens AW. 18F-GP1, a Novel PET Tracer Designed for High-Sensitivity, Low-Background Detection of Thrombi. J Nucl Med 2017; 58:1094-1099. [DOI: 10.2967/jnumed.116.188896] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 03/02/2017] [Indexed: 01/09/2023] Open
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9
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De Marco R, Tolomelli A, Juaristi E, Gentilucci L. Integrin Ligands with α/β-Hybrid Peptide Structure: Design, Bioactivity, and Conformational Aspects. Med Res Rev 2016; 36:389-424. [PMID: 26777675 DOI: 10.1002/med.21383] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Integrins are cell surface receptors for proteins of the extracellular matrix and plasma-borne adhesive proteins. Their involvement in diverse pathologies prompted medicinal chemists to develop small-molecule antagonists, and very often such molecules are peptidomimetics designed on the basis of the short native ligand-integrin recognition motifs. This review deals with peptidomimetic integrin ligands composed of α- and β-amino acids. The roles exerted by the β-amino acid components are discussed in terms of biological activity, bioavailability, and selectivity. Special attention is paid to the synthetic accessibility and efficiency of conformationally constrained heterocyclic scaffolds incorporating α/β-amino acid span.
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Affiliation(s)
- Rossella De Marco
- Department of Chemistry "G. Ciamician,", University of Bologna, via Selmi 2, 40126, Bologna, Italy
| | - Alessandra Tolomelli
- Department of Chemistry "G. Ciamician,", University of Bologna, via Selmi 2, 40126, Bologna, Italy
| | - Eusebio Juaristi
- Department of Chemistry, Centro de Investigacion y de Estudios Avanzados del IPN, Avenida IPN 2508, esquina Ticoman, Mexico, D.F., 07360, Mexico
| | - Luca Gentilucci
- Department of Chemistry "G. Ciamician,", University of Bologna, via Selmi 2, 40126, Bologna, Italy
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10
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Asymmetric synthesis of syn-propargylamines and unsaturated β-amino acids under Brønsted base catalysis. Nat Commun 2015; 6:8544. [PMID: 26423837 PMCID: PMC4600747 DOI: 10.1038/ncomms9544] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 09/01/2015] [Indexed: 12/05/2022] Open
Abstract
Propargylamines are important intermediates for the synthesis of polyfunctional amino derivatives and natural products and biologically active compounds. The classic method of synthesizing chiral propargylamines involves the asymmetric alkynylation of imines. Here, we report a significant advance in the catalytic asymmetric Mannich-type synthesis of propargylamines through catalytic asymmetric addition of carbon nucleophiles to C-alkynyl imines, culminating in a highly syn-selective catalytic asymmetric Mannich reaction of C-alkynyl imines that provide syn-configured propargylamines with two adjacent stereogenic centres and a transition metal-free organocatalytic asymmetric approach to β-alkynyl-β-amino acids with high efficiency and practicality, via a chiral Brønsted base-catalysed asymmetric Mannich-type reaction of in situ generated challenging N-Boc C-alkynyl imines from previously unreported C-alkynyl N-Boc-N,O-acetals, with α-substituted β-keto esters and less-acidic malonate (thio)esters as nucleophiles, respectively. A catalytic activation strategy is also disclosed, which may have broad implications for use in catalysis and synthesis. Propargylamines are of interest both as biologically active compounds and versatile synthetic intermediates. Here, the authors report a method for the organocatalytic asymmetric synthesis of propargylamines through addition of carbon nucleophiles to alkynyl imines.
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11
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Cabrele C, Martinek TA, Reiser O, Berlicki Ł. Peptides Containing β-Amino Acid Patterns: Challenges and Successes in Medicinal Chemistry. J Med Chem 2014; 57:9718-39. [DOI: 10.1021/jm5010896] [Citation(s) in RCA: 182] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chiara Cabrele
- Department
of Molecular Biology, University of Salzburg, Billrothstrasse 11, 5020 Salzburg, Austria
| | - Tamás A. Martinek
- SZTE-MTA
Lendulet Foldamer Research Group, Institute of Pharmaceutical Analysis, University of Szeged, Somogyi u. 6., H-6720 Szeged, Hungary
| | - Oliver Reiser
- Institute
of Organic Chemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
| | - Łukasz Berlicki
- Department
of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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12
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Chang MY, Chen ST. Concise Synthesis of Sibrafiban and Lamifiban, Two Non-Peptide Fibrinogen Receptor (GPIIb/IIIa) Antagonists. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200100024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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13
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Chang MY, Lin JYC, Chen ST, Chang NC. Synthetic Study of 4-Substituted Piperidine Ring in Elarofiban, RWJ-50042, Tirofiban and Paroxetine. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200200156] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Amans D, Bellosta V, Dacquet C, Ktorza A, Hennuyer N, Staels B, Caignard DH, Cossy J. Synthesis and evaluation of new polyenic compounds as potential PPARs modulators. Org Biomol Chem 2012; 10:6169-85. [DOI: 10.1039/c2ob25593f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Wassenaar J, Reek JNH. Asymmetric Hydrogenation of Enamides, α-Enol and α-Enamido Ester Phosphonates Catalyzed by IndolPhos-Rh Complexes. J Org Chem 2009; 74:8403-6. [DOI: 10.1021/jo9018683] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jeroen Wassenaar
- Supramolecular & Homogeneous Catalysis, van't Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - Joost N. H. Reek
- Supramolecular & Homogeneous Catalysis, van't Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
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17
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Tasnádi G, Forró E, Fülöp F. Burkholderia cepacia lipase is an excellent enzyme for the enantioselective hydrolysis of β-heteroaryl-β-amino esters. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.06.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Majumdar KC, Chakravorty S, Taher A. New Efficient RCM-Mediated Synthesis of Pyrrolidine Derivatives. SYNTHETIC COMMUN 2008. [DOI: 10.1080/00397910802109240] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | | | - Abu Taher
- a Department of Chemistry , University of Kalyani , Kalyani, India
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19
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Thrombogenic collagen-mimetic peptides: Self-assembly of triple helix-based fibrils driven by hydrophobic interactions. Proc Natl Acad Sci U S A 2008; 105:8513-8. [PMID: 18559857 DOI: 10.1073/pnas.0800291105] [Citation(s) in RCA: 132] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Collagens are integral structural proteins in animal tissues and play key functional roles in cellular modulation. We sought to discover collagen model peptides (CMPs) that would form triple helices and self-assemble into supramolecular fibrils exhibiting collagen-like biological activity without preorganizing the peptide chains by covalent linkages. This challenging objective was accomplished by placing aromatic groups on the ends of a representative 30-mer CMP, (GPO)(10), as with l-phenylalanine and l-pentafluorophenylalanine in 32-mer 1a. Computational studies on homologous 29-mers 1a'-d' (one less GPO), as pairs of triple helices interacting head-to-tail, yielded stabilization energies in the order 1a' > 1b' > 1c' > 1d', supporting the hypothesis that hydrophobic aromatic groups can drive CMP self-assembly. Peptides 1a-d were studied comparatively relative to structural properties and ability to stimulate human platelets. Although each 32-mer formed stable triple helices (CD) spectroscopy, only 1a and 1b self-assembled into micrometer-scale fibrils. Light microscopy images for 1a depicted long collagen-like fibrils, whereas images for 1d did not. Atomic force microscopy topographical images indicated that 1a and 1b self-organize into microfibrillar species, whereas 1c and 1d do not. Peptides 1a and 1b induced the aggregation of human blood platelets with a potency similar to type I collagen, whereas 1c was much less effective, and 1d was inactive (EC(50) potency: 1a/1b >> 1c > 1d). Thus, 1a and 1b spontaneously self-assemble into thrombogenic collagen-mimetic materials because of hydrophobic aromatic interactions provided by the special end-groups. These findings have important implications for the design of biofunctional CMPs.
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20
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Synthesis of pharmaceutically active compounds containing a disubstituted piperidine framework. Bioorg Med Chem 2008; 16:601-35. [DOI: 10.1016/j.bmc.2007.10.018] [Citation(s) in RCA: 177] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2007] [Accepted: 10/09/2007] [Indexed: 11/18/2022]
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21
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Jiang H, Nielsen JB, Nielsen M, Jørgensen KA. Organocatalysed Asymmetric β-Amination and Multicomponentsyn-Selective Diamination of α,β-Unsaturated Aldehydes. Chemistry 2007; 13:9068-75. [PMID: 17694530 DOI: 10.1002/chem.200700696] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
An easy and affordable route for obtaining chiral beta-aminated- and alpha,beta-diaminated aldehydes, 1,3-aminoalcohols, and related compounds by using organocatalysis is presented. The chiral secondary amine (S)-2-[bis(3,5-bistrifluoromethylphenyl)trimethylsilanyloxymethyl]pyrrolidine is used as the catalyst to activate alpha,beta-unsaturated aldehydes, which allows succinimide to add in a 1,4-regio- and stereoselective fashion thereby forming N-protected 1,3-aminoaldehydes in good yields and enantioselectivities. This is followed by two easy transformations giving rise to optically active 1,3-aminoalcohols, a common motif in many biologically active compounds, for example, fibrinogen receptor antagonists. Furthermore, optically active alpha,beta-syn-diaminated aldehydes were obtained by the addition of diethyl azodicarboxylate in a one-pot reaction.
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Affiliation(s)
- Hao Jiang
- Danish National Research Foundation: Center for Catalysis, Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
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22
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Chatterjee J, Ovadia O, Zahn G, Marinelli L, Hoffman A, Gilon C, Kessler H. Multiple N-methylation by a designed approach enhances receptor selectivity. J Med Chem 2007; 50:5878-81. [PMID: 17973471 DOI: 10.1021/jm701044r] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An unselective cyclic peptide integrin ligand was sequentially N-methylated by a designed approach, where only the externally oriented (solvent exposed) amide bonds were N-methylated. The N-methylation resulted in tremendous enhancement in selectivity among the different integrin receptor subtypes (alpha5beta1, alphavbeta3, and alphaIIbbeta3). Conformational and docking studies were performed, which suggested that the receptor selectivity is principally caused by reduced backbone flexibility due to N-methylation.
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Affiliation(s)
- Jayanta Chatterjee
- Center for Integrated Protein Science at the Department Chemie, Lehrstuhl II für Organische Chemie, Technische Universität München, Lichtenbergstrasse 4, Garching D85747, Germany
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24
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Zhang J, Witholt B, Li Z. Coupling of permeabilized microorganisms for efficient enantioselective reduction of ketone with cofactor recycling. Chem Commun (Camb) 2007:398-400. [PMID: 16493811 DOI: 10.1039/b515721h] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel, simple and efficient cofactor recycling method for enantioselective bioreduction has been developed by the use of permeabilized cells of a reductase-containing microorganism and a glucose dehydrogenase-containing microorganism
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Affiliation(s)
- Jie Zhang
- Institute of Biotechnology, ETH-Hönggerberg, CH-8093, Zurich, Switzerland
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25
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Cejas MA, Kinney WA, Chen C, Leo GC, Tounge BA, Vinter JG, Joshi PP, Maryanoff BE. Collagen-related peptides: self-assembly of short, single strands into a functional biomaterial of micrometer scale. J Am Chem Soc 2007; 129:2202-3. [PMID: 17269769 DOI: 10.1021/ja066986f] [Citation(s) in RCA: 113] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mabel A Cejas
- Vascular Research Team, Johnson & Johnson Pharmaceutical Research & Development, Spring House, Pennsylvania 19477-0776, USA
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26
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Maryanoff BE. Adventures in drug discovery: potent agents based on ligands for cell-surface receptors. Acc Chem Res 2006; 39:831-40. [PMID: 17115723 DOI: 10.1021/ar040112l] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
How does one go about discovering new drugs? This question is addressed by descriptions of drug discovery research in three project areas that pertain to antagonist ligands for cell-surface receptors. The molecular targets of interest are protease-activated receptor-1 (PAR-1), vasopressin receptors (V1a and V2 subtypes), and the fibrinogen receptor (GPIIb/IIIa). I present different approaches to the identification of high-affinity ligands for these receptors, en route to drug candidates. The PAR-1 project resulted in a pharmacological tool compound that facilitated in vivo proof-of-principle studies, whereas the vasopressin and fibrinogen receptor projects resulted in several preclinical development compounds, three of which advanced into human clinical trials.
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Affiliation(s)
- Bruce E Maryanoff
- Vascular Research Team, Johnson & Johnson Pharmaceutical Research & Development, Spring House, Pennsylvania 19477-0776, USA.
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27
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Dixon SL, Smondyrev AM, Rao SN. PHASE: a novel approach to pharmacophore modeling and 3D database searching. Chem Biol Drug Des 2006; 67:370-2. [PMID: 16784462 DOI: 10.1111/j.1747-0285.2006.00384.x] [Citation(s) in RCA: 445] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Steven L Dixon
- Schrödinger, Inc., 120 W. 45th St, 29th Floor, New York, NY 10036, USA.
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28
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Wei W, Kobayashi M, Ukaji Y, Inomata K. Asymmetric Addition of Alkynylzinc Reagents to Nitrones Utilizing Tartaric Acid Ester as a Chiral Auxiliary. CHEM LETT 2006. [DOI: 10.1246/cl.2006.176] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Leflemme N, Freret T, Boulouard M, Dallemagne P, Rault S. Synthesis and preliminary in vivo evaluation of new 2-Aryl-6-methyl-1,2-dihydro-1H-pyridin-4-ones and 2-Aryl-6-methylpiperidin-4-ols, as potential anti-amnesiant agents. J Enzyme Inhib Med Chem 2006; 20:551-6. [PMID: 16408790 DOI: 10.1080/14756360500212266] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
A revisited synthesis of 2-aryl-6-methyl-1,2-dihydro-1H-pyridin-4-ones and their saturated analogues 2-aryl-6-methylpiperidin-4-ols is described. A five steps procedure, using the sulfinimine chemistry, to prepare a key intermediate beta-(6-chloronicotinic)-beta-amino ester is also reported. In vivo spontaneous working memory activity of these compounds has been investigated in the mouse. Results obtained with 2-(3-chlorophenyl)-6-methyl-1,2-dihydro-1H-pyridin-4-one 9b, the most effective derivative in this model, have been reported.
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Affiliation(s)
- Nicolas Leflemme
- Centre d'Etudes et de Recherche sur le Médicament de Normandie, 1 rue Vaubénard 14032, Caen Cedex, France
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Yamanaka T, Ohkubo M, Kuroda S, Nakamura H, Takahashi F, Aoki T, Mihara K, Seki J, Kato M. Design, synthesis, and structure–activity relationships of potent GPIIb/IIIa antagonists: discovery of FK419. Bioorg Med Chem 2005; 13:4343-52. [PMID: 15927840 DOI: 10.1016/j.bmc.2005.03.056] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2005] [Revised: 03/31/2005] [Accepted: 03/31/2005] [Indexed: 11/30/2022]
Abstract
The discovery of the non-peptide antiplatelet injectable agent FK419 is reported. Based on the beta-turn structure of RGD peptide sequences in the alpha chain of fibrinogen, which binds the glycoprotein IIb/IIIa (GPIIb/IIIa) on the surface of platelets to induce platelet aggregation, the prototype 2 was designed. After further substituent effects were investigated at the alpha-position of the carboxylic acid in 2, we enhanced platelet aggregation inhibition, and discovered the useful feature of reduced prolongation of bleeding time. Finally, the potent platelet aggregation inhibitor FK419 (3) could be discovered. FK419 shows a safe feature of reduced prolongation of bleeding time, as well as potent inhibition of platelet aggregation.
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Affiliation(s)
- Toshio Yamanaka
- Medicinal Chemistry Research Laboratories, Fujisawa Pharmaceutical Co., Ltd, 2-1-6 Kashima, Yodogawa-Ku, Osaka 532-8514, Japan.
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31
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Tanitame A, Oyamada Y, Ofuji K, Fujimoto M, Suzuki K, Ueda T, Terauchi H, Kawasaki M, Nagai K, Wachi M, Yamagishi JI. Synthesis and antibacterial activity of novel and potent DNA gyrase inhibitors with azole ring. Bioorg Med Chem 2005; 12:5515-24. [PMID: 15465328 DOI: 10.1016/j.bmc.2004.08.010] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2004] [Accepted: 08/10/2004] [Indexed: 11/17/2022]
Abstract
The 4-piperidyl moiety and the pyrazole ring in 1-(3-chlorophenyl)-5-(4-phenoxyphenyl)-3-(4-piperidyl)pyrazole 2, which has previously shown improved DNA gyrase inhibition and target-related antibacterial activity, were transformed to other groups and the in vitro antibacterial activity of the synthesized compounds was evaluated. The selected pyrazole, oxazole and imidazole derivatives showed moderate inhibition against DNA gyrase and topoisomerase IV with similar IC(50) values (IC(50)=9.4-25 microg/mL). In addition, many of the pyrazole, oxazole and imidazole derivatives synthesized in this study exhibited potent antibacterial activity against quinolone-resistant clinical isolates and coumarin-resistant laboratory isolates of Gram-positive bacteria with minimal inhibitory concentration values equivalent to those against susceptible strains.
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Affiliation(s)
- Akihiko Tanitame
- Chemistry Research Laboratories, Dainippon Pharmaceutical Co. Ltd, 33-94 Enoki, Suita, Osaka 564-0053, Japan.
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32
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Boto A, Hernández R, de León Y, Murguía JR, Rodriguez-Afonso A. Synthesis of Functionalized Nitrogen Heterocycles by Radical Decarboxylation of β- and γ-Amino Acids. European J Org Chem 2005. [DOI: 10.1002/ejoc.200400698] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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33
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Yang Q, Xiao WJ, Yu Z. Lewis Acid Assisted Ring-Closing Metathesis of Chiral Diallylamines: An Efficient Approach to Enantiopure Pyrrolidine Derivatives. Org Lett 2005; 7:871-4. [PMID: 15727462 DOI: 10.1021/ol047356q] [Citation(s) in RCA: 128] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lewis acid assisted ring-closing olefin metathesis (RCM) of chiral diallylamines, using the second generation RCM ruthenium-based catalyst, leads to enantiopure pyrrolidine derivatives in 79-93% yields under very mild conditions. The scope of the olefin metathesis has been expanded. [structure: see text]
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Affiliation(s)
- Qian Yang
- The Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan, Hubei 430079, China
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34
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Ghosh S, Santulli RJ, Kinney WA, Decorte BL, Liu L, Lewis JM, Proost JC, Leo GC, Masucci J, Hageman WE, Thompson AS, Chen I, Kawahama R, Tuman RW, Galemmo RA, Johnson DL, Damiano BP, Maryanoff BE. 1,2,3,4-Tetrahydroquinoline-containing αVβ3 integrin antagonists with enhanced oral bioavailability. Bioorg Med Chem Lett 2004; 14:5937-41. [PMID: 15501072 DOI: 10.1016/j.bmcl.2004.08.067] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2004] [Accepted: 08/31/2004] [Indexed: 10/26/2022]
Abstract
Reduction of the quinoline ring in an alpha(v)beta(3) antagonist yielded a 1,2,3,4-tetrahydro derivative as two diastereomers, the four isomers of which were separated by sequential chiral HPLC. Two isomers had significant alpha(V)beta(3) antagonist activity with improved oral bioavailability, relative to the corresponding quinoline derivative.
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Affiliation(s)
- Shyamali Ghosh
- Drug Discovery, Johnson & Johnson Pharmaceutical Research & Development, L.L.C., Welsh & McKean Roads, Spring House, PA 19477-0776, USA
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35
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De Corte BL, Kinney WA, Liu L, Ghosh S, Brunner L, Hoekstra WJ, Santulli RJ, Tuman RW, Baker J, Burns C, Proost JC, Tounge BA, Damiano BP, Maryanoff BE, Johnson DL, Galemmo RA. Piperidine-containing β-arylpropionic acids as potent antagonists of αvβ3/αvβ5 integrins. Bioorg Med Chem Lett 2004; 14:5227-32. [PMID: 15380233 DOI: 10.1016/j.bmcl.2004.06.061] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2004] [Revised: 06/18/2004] [Accepted: 06/18/2004] [Indexed: 11/16/2022]
Abstract
The synthesis and SAR of a new class of piperidine-based alphavbeta3/alphavbeta5 integrin antagonists is described. Replacement of an amide bond in a prototype isonipecotamide by a C-C isostere, and adjustment of the spacer length between the carboxylic acid and basic moieties, led to low nanomolar antagonists of alphavbeta3 and/or alphavbeta5 integrins with excellent selectivity versus alpha(IIb)beta3.
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Affiliation(s)
- Bart L De Corte
- Drug Discovery, Johnson & Johnson Pharmaceutical Research and Development, Welsh & McKean Roads, Spring House, PA 19477-0776, USA.
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36
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Acharya T, Kennedy R, Daar AS, Singer PA. Biotechnology to improve health in developing countries -- a review. Mem Inst Oswaldo Cruz 2004; 99:341-50. [PMID: 15322621 DOI: 10.1590/s0074-02762004000400001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023] Open
Abstract
The growing health disparities between the developing and the developed world call for urgent action from the scientific community. Science and technology have in the past played a vital role in improving public health. Today, with the tremendous potential of genomics and other advances in the life sciences, the contribution of science to improve public health and reduce global health disparities is more pertinent than ever before. Yet the benefits of modern medicine still have not reached millions of people in developing countries. It is crucial to recognize that science and technology can be used very effectively in partnership with public health practices in developing countries and can enhance their efficacy. The fight to improve global health needs, in addition to effective public health measures, requires rapid and efficient diagnostic tools; new vaccines and drugs, efficient delivery methods and novel approaches to therapeutics; and low-cost restoration of water, soil and other natural resources. In 2002, the University of Toronto published a report on the "Top 10 Biotechnologies for Improving Health in Developing Countries". Here we review these new and emerging biotechnologies and explore how they can be used to support the goals of developing countries in improving health.
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Affiliation(s)
- Tara Acharya
- Joint Centre for Bioethics, University of Toronto, 88 College St., Toronto ON, M5G-1L4, Canada
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37
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Zhang J, Duetz WA, Witholt B, Li Z. Rapid identification of new bacterial alcohol dehydrogenases for (R)- and (S)-enantioselective reduction of ss-ketoesters. Chem Commun (Camb) 2004:2120-1. [PMID: 15368004 DOI: 10.1039/b407004f] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New bacterial alcohol dehydrogenases with high and complementary enantioselectivity for the reduction of ethyl 3-keto-4,4,4-trifluorobutyrate 1 and methyl 3-keto-3-(3'-pyridyl)-propionate 3 have been rapidly identified by use of a new methodology consisting of preselection of microorganisms based on degradation ability and high-throughput screening with a miniaturized system coupled with fast analysis of enantioselectivities.
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Affiliation(s)
- Jie Zhang
- Institute of Biotechnology, ETH-Zurich, Honggerberg, CH-8093 Zurich, Switzerland
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38
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Cohen JH, Bos ME, Cesco-Cancian S, Harris BD, Hortenstine JT, Justus M, Maryanoff CA, Mills J, Muller S, Roessler A, Scott L, Sorgi KL, Villani, FJ, Webster RRH, Weh C. A Practical Synthesis of the Platelet Fibrinogen Antagonist, Elarofiban. Org Process Res Dev 2003. [DOI: 10.1021/op034103o] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Judith H. Cohen
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - Mary Ellen Bos
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - Sergio Cesco-Cancian
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - Bruce D. Harris
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - John T. Hortenstine
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - Michael Justus
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - Cynthia A. Maryanoff
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - John Mills
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - Stefan Muller
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - Armin Roessler
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - Lorraine Scott
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - Kirk L. Sorgi
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - Frank J. Villani,
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - Robin R. H. Webster
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
| | - Christian Weh
- Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Spring House, Pennsylvania 19477, U.S.A., Johnson & Johnson Pharmaceutical Research & Development LLC, Drug Evaluation, Chemical & Pharmaceutical Development Department, Raritan, New Jersey 08869, U.S.A., and Cilag AG Pharmaceutical and Chemical Operations, Hochstrasse 201, 8205 Schaffhausen, Switzerland
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39
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Tang W, Zhang X. New chiral phosphorus ligands for enantioselective hydrogenation. Chem Rev 2003; 103:3029-70. [PMID: 12914491 DOI: 10.1021/cr020049i] [Citation(s) in RCA: 1928] [Impact Index Per Article: 91.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wenjun Tang
- Department of Chemistry, 152 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USA
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40
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Yang C, Murray WV, Wilson LJ. Microwave enabled external carboxymethyl substituents in the ring-closing metathesis. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)00083-2] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Tang W, Zhang X. Highly efficient synthesis of chiral beta-amino acid derivatives via asymmetric hydrogenation. Org Lett 2002; 4:4159-61. [PMID: 12423111 DOI: 10.1021/ol026935x] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Rh-TangPhos complex is an efficient hydrogenation catalyst for making chiral beta-amino acid derivatives. With the Rh-TangPhos system, high enantioselectivities (up to 99.6%) and turnover numbers have been obtained in the hydrogenation of E/Z isomeric mixtures of both beta-alkyl and beta-aryl beta-(acylamino)acrylates. [reaction: see text]
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Affiliation(s)
- Wenjun Tang
- Department of Chemistry, The Pennsylvania State University, 152 Davey Laboratory, University Park, PA 16802, USA
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42
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Solymár M, Fülöp F, Kanerva LT. Candida antarctica lipase A—a powerful catalyst for the resolution of heteroaromatic β-amino esters. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0957-4166(02)00637-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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43
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Blanchet J, Bonin M, Micouin L. RECENT PROGRESS IN THE ASYMMETRIC SYNTHESIS OF α-SUBSTITUTED PROPARGYLAMINES. ORG PREP PROCED INT 2002. [DOI: 10.1080/00304940209355765] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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44
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Solymár M, Liljeblad A, Lázár L, Fülöp F, Kanerva LT. Lipase-catalysed kinetic resolution in organic solvents: an approach to enantiopure α-methyl-β-alanine esters. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0957-4166(02)00478-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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45
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Zhou YG, Tang W, Wang WB, Li W, Zhang X. Highly effective chiral ortho-substituted BINAPO ligands (o-BINAPO): applications in Ru-catalyzed asymmetric hydrogenations of beta-aryl-substituted beta-(acylamino)acrylates and beta-keto esters. J Am Chem Soc 2002; 124:4952-3. [PMID: 11982347 DOI: 10.1021/ja020121u] [Citation(s) in RCA: 163] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel family of chiral ortho-substituted BINAPO ligands (o-BINAPO) were synthesized from BINOL, and their Ru complexes were highly efficient catalysts for asymmetric hydrogenation of beta-aryl-substituted beta-(acylamino)acrylates and beta-aryl-substituted beta-keto esters. The Ru-bisphosphinite catalysts can tolerate an E/Z mixture of beta-aryl-substituted beta-(acylamino)acrylates. These highly enantioselective hydrogenations provide a useful way to prepare beta-aryl-substituted beta-amino acids and beta-hydroxyl acids.
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Affiliation(s)
- Yong-Gui Zhou
- Department of Chemistry, The Pennsylvania State University, 152 Davey Laboratory, University Park, Pennsylvania 16802, USA
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46
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47
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Bull SD, Davies SG, Fox DJ, Gianotti M, Kelly PM, Pierres C, Savory ED, Smith AD. Asymmetric synthesis of β-pyridyl-β-amino acid derivatives. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b204653a] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Damiano BP, Mitchell JA, Giardino E, Corcoran T, Haertlein BJ, de Garavilla L, Kauffman JA, Hoekstra WJ, Maryanoff BE, Andrade-Gordon P. Antiplatelet and antithrombotic activity of RWJ-53308, a novel orally active glycoprotein IIb/IIIa antagonist. Thromb Res 2001; 104:113-26. [PMID: 11672755 DOI: 10.1016/s0049-3848(01)00353-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
RWJ-53308 is a novel nonpeptide glycoprotein IIb/IIIa (GPIIb/IIIa) antagonist that inhibits fibrinogen binding to GPIIb/IIIa with an IC(50) of 0.4+/-0.3 nM. RWJ-53308 inhibits thrombin-induced platelet aggregation in human gel-filtered platelets (IC(50)=60+/-12 nM) and platelet aggregation in human platelet-rich plasma (PRP) in response to collagen, arachidonic acid, ADP, and SFLLRN-NH(2) (IC(50)=60+/-10, 150+/-30, 70+/-4, and 160+/-80 nM, respectively). The potency of RWJ-53308 in dog and guinea pig PRP is similar to human PRP. RWJ-53308 inhibits ex vivo collagen- and ADP-induced platelet aggregation in conscious dogs for up to 4 h following 0.3 mg/kg iv, and through 4 and 6 h following 1 and 3 mg/kg po. Oral bioavailability is 16+/-7%. RWJ-53308 reduces thrombus weight in a canine arteriovenous (AV) shunt model following intravenous (0.01-0.1 mg/kg) and oral (3 mg/kg) administration. In a guinea pig carotid artery pinch-injury model, RWJ-53308 completely suppresses thrombus-induced cyclic flow reductions (CFR) at 0.7 mg/kg iv. RWJ-53308 also blocks thrombus formation in photoactivation- and ferric chloride-induced models of thrombosis in guinea pigs at 0.3 and 1 mg/kg iv, respectively. In summary, RWJ-53308 is a potent orally active GPIIb/IIIa antagonist that may be useful for both acute and chronic treatment of arterial thrombotic disorders.
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Affiliation(s)
- B P Damiano
- R.W. Johnson Pharmaceutical Research Institute, Spring House, PA 19477-0776, USA
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49
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Lawson EC, Hoekstra WJ, Addo MF, Andrade-Gordon P, Damiano BP, Kauffman JA, Mitchell JA, Maryanoff BE. 1,2,4-triazolo[3,4-a]pyridine as a novel, constrained template for fibrinogen receptor (GPIIb/IIIa) antagonists. Bioorg Med Chem Lett 2001; 11:2619-22. [PMID: 11551763 DOI: 10.1016/s0960-894x(01)00529-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Conformationally constrained analogues of the GPIIb/IIIa antagonist elarofiban (RWJ-53308) have been synthesized and biologically evaluated. The 1,2,4-triazolo[3,4-a]pyridine scaffold provided potent antagonists with favorable pharmacodynamic and pharmacokinetic attributes in dogs. Compounds 12a and 13a exhibited enhancements in oral bioavailability, t(1/2), and ex vivo duration of action (inhibition of ADP-induced platelet aggregation) relative to elarofiban.
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Affiliation(s)
- E C Lawson
- Drug Discovery, The R. W. Johnson Pharmaceutical Research Institute, Spring House, PA 19477-0776, USA
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50
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